<?php

namespace doumiaoduo\aliyun;

use common\components\helpers\Fun;
use EasyWeChat\Foundation\Application;
use EasyWeChat\Material\Temporary;
use OSS\Core\OssException;
use OSS\OssClient;


/**
 * Created by JetBrains PhpStorm.
 * User: taoqili
 * Date: 15-1-22
 * Time: 上午11: 32
 * OSS通用上传类
 */
class OssuploaderHelper extends \yii\base\Component
{
    private $type;
    private $fileField; //文件域名
    private $file; //文件上传对象
    private $base64; //文件上传对象
    private $config; //配置信息
    private $oriName; //原始文件名
    private $fileName; //新文件名
    private $fullName; //完整文件名,即从当前配置目录开始的URL
    private $filePath; //完整文件名,即从当前配置目录开始的URL
    private $fileSize; //文件大小
    private $fileType; //文件类型
    private $stateInfo; //上传状态信息,
    private $ossFileRootPath;
    private $ossImageProcessUrl;

    private $media_id;//针对微信端的

    private $endpoint;
    private $accessKeyId;
    private $accessKeySecret;
    private $bucket;
    private $ossClient;
    private $stateMap = [ //上传状态映射表，国际化用户需考虑此处数据的国际化
        "SUCCESS", //上传成功标记，在UEditor中内不可改变，否则flash判断会出错
        "文件大小超出 upload_max_filesize 限制",//php.ini中设置的文件大小限制错误
        "文件大小超出 MAX_FILE_SIZE 限制",//html的form表单设置的文件大小限制错误
        "文件未被完整上传",
        "没有文件被上传",
        "上传文件为空",
        "ERROR_TMP_FILE" => "临时文件错误",
        "ERROR_TMP_FILE_NOT_FOUND" => "找不到临时文件",
        "ERROR_SIZE_EXCEED" => "文件大小超出网站限制",
        "ERROR_TYPE_NOT_ALLOWED" => "文件类型不允许",
        "ERROR_CREATE_DIR" => "目录创建失败",
        "ERROR_DIR_NOT_WRITEABLE" => "目录没有写权限",
        "ERROR_FILE_MOVE" => "文件保存时出错",
        "ERROR_FILE_NOT_FOUND" => "找不到上传文件",
        "ERROR_WECHATFILE_NOT_FOUND" => "图片过大上传至微信端有误",
        "ERROR_WRITE_CONTENT" => "写入文件内容错误",
        "ERROR_UNKNOWN" => "未知错误",
        "ERROR_DEAD_LINK" => "链接不可用",
        "ERROR_HTTP_LINK" => "链接不是http链接",
        "ERROR_HTTP_CONTENTTYPE" => "链接contentType不正确",
        "ERROR_OSS_PATH" => "阿里云OSS中不存在该域名路径",
    ];
    const UPLOAD_SUCCESS = 'upload_success';
    private static $upload_wechatimg_times = 0;
    /**
     * 构造函数
     * @param string $fileField 表单名称
     * @param array $config 配置项
     * @param bool $base64 是否解析base64编码，可省略。若开启，则$fileField代表的是base64编码的字符串表单名
     */
    public function __construct($fileField, $config, $type = "upload")//(uploadfile,)
//         $config = array(
//            "pathFormat" =>$this->_config['filePathFormat'],//filePathFormat为"/uploadfiles/web/site/file/{yyyy}{mm}{dd}/{time}{rand:6}"
//            "maxSize" => $this->_config['fileMaxSize'],
//            "allowFiles" => $this->_config['fileAllowFiles']
//        );
    {
        $this->fileField = $fileField;
        $this->config = $config;
        $this->type = $type;

        $ossconfig = \Yii::$app->params['aliyun_oss'];
        $this->endpoint = $ossconfig['OSS_ENDPOINT'];
        $this->accessKeyId = $ossconfig['OSS_ACCESS_ID'];
        $this->accessKeySecret = $ossconfig['OSS_ACCESS_KEY'];
        $this->bucket = $ossconfig['OSS_TEST_BUCKET'];
        $this->ossImageProcessUrl = $ossconfig['OSS_IMG_PROCESS'];
        $this->ossClient = new OssClient($this->accessKeyId,$this->accessKeySecret,$this->endpoint);
        if ($type == "remote") {
            $this->saveRemote();
        } elseif($type == "base64") {
            $this->upBase64();
        } elseif($type == "wechat"){
            $this->media_id = $this->config['media_id']?$this->config['media_id']:0;
            $this->upfileforwechat();
        }else {
            $this->upFile();
        }

        //$this->stateMap['ERROR_TYPE_NOT_ALLOWED'] = iconv('unicode', 'utf-8', $this->stateMap['ERROR_TYPE_NOT_ALLOWED']);
    }

    /**
     * 上传文件的主处理方法
     * 为了自己理解，先每一步都写写注释
     * @return mixed
     */
    private function upFile()
    {
        $file = $this->file = $_FILES[$this->fileField];//$_FILES是系统函数，存储与上传文件有关的信息,$_FILES[文件上传对象形如uploadfile][]
        if (!$file) {
            $this->stateInfo = $this->getStateInfo("ERROR_FILE_NOT_FOUND");
            return;
        }
        if ($this->file['error']) {//要放宽php.ini中文件upload_max_filesize的大小限制
            $this->stateInfo = $this->getStateInfo($file['error']);
            return;
        } else if (!file_exists($file['tmp_name'])) {
            $this->stateInfo = $this->getStateInfo("ERROR_TMP_FILE_NOT_FOUND");
            return;
        } else if (!is_uploaded_file($file['tmp_name'])) {
            $this->stateInfo = $this->getStateInfo("ERROR_TMPFILE");
            return;
        }

        $this->oriName = $file['name'];
        $this->fileSize = $file['size'];
        $this->fileType = $this->getFileExt();
        $this->fullName = $this->getFullName();
        $this->filePath = $this->getOssFilePath();
        $this->fileName = $this->getFileName();
        $dirname = dirname($this->filePath);

        //检查文件大小是否超出限制
        if (!$this->checkSize()) {
            $this->stateInfo = $this->getStateInfo("ERROR_SIZE_EXCEED");
            return;
        }

        //检查是否不允许的文件格式
        if (!$this->checkType()) {
            $this->stateInfo = $this->getStateInfo("ERROR_TYPE_NOT_ALLOWED");
            return;
        }

        //创建目录失败
        /**
        if (!file_exists($dirname) && !mkdir($dirname, 0777, true)) {
            $this->stateInfo = $this->getStateInfo("ERROR_CREATE_DIR");
            return;
        } else if (!is_writeable($dirname)) {
            $this->stateInfo = $this->getStateInfo("ERROR_DIR_NOT_WRITEABLE");
            return;
        }*/

        //移动文件
        /**if (!(move_uploaded_file($file["tmp_name"], $this->filePath) && file_exists($this->filePath))) { //移动失败
            $this->stateInfo = $this->getStateInfo("ERROR_FILE_MOVE");
        } else { //移动成功
            $this->stateInfo = $this->stateMap[0];
            $this->uploadSuccess($this->fullName);
        }*/
        //将文件进行上传至oss的操作
        if($this->fileSize<102400){
            //文件大小小于100kb，使用普通上传
            $content = file_get_contents($file['tmp_name']);
            $result = $this->ossPutObject($this->ossClient,$this->bucket,$this->fullName,$content);
            if($result){
                $this->stateInfo = $this->stateMap[0];
                $this->uploadSuccess($this->fullName);
            }else{
                $this->stateInfo = $this->getStateInfo("ERROR_FILE_MOVE");
            }
        }else{//大文件上传
            $result = $this->ossMultipleUpload($this->ossClient,$this->bucket,$this->fullName,$file['tmp_name']);
            if($result){
                $this->stateInfo = $this->stateMap[0];
                $this->uploadSuccess($this->fullName);
            }else{
                $this->stateInfo = $this->getStateInfo("ERROR_FILE_MOVE");
            }
        }
    }

    private function upfileforwechat(){
        $url = $_SERVER['HTTP_HOST'];
        $perfUrl = explode(".",$url);
        if($perfUrl[0] == "wechat"){
            $options = \Yii::$app->params['options_zht'];
        }else{
            $options = \Yii::$app->params['options'];
        }
        $application = new Application($options);
        $temporary = $application->material_temporary;
        $response = $temporary->getHttp()->get(Temporary::API_GET, ['media_id' => $this->media_id]);
        $res_head =  $response->getHeaders();
        $res = $temporary->getStream($this->media_id);
        if (!$res) {
            if(static::$upload_wechatimg_times < 3){//等待个6s使其往微信端上传成功
                static::$upload_wechatimg_times ++;
                sleep(2);//是以秒为单位的
                $this->upfileforwechat();
            }else{
                $this->stateInfo = $this->getStateInfo("ERROR_WECHATFILE_NOT_FOUND");
                return;
            }

        }

        $this->fileSize = $res_head['Content-Length'][0];
        $deposition = $res_head['Content-disposition'][0];
        $deposition_arr = explode('filename=',$deposition);
        $filename_ori='';
        if(!empty($deposition_arr) && isset($deposition_arr[1])){
            $filename_ori = str_replace('"','',$deposition_arr[1]);//获取文件名称
        }
        $this->oriName = $filename_ori;
        $this->fileType = $this->getFileExt();//扩展名
        $this->fullName = $this->getFullName();
        $this->filePath = $this->getFilePath();
        $this->fileName = $this->getFileName();

        //检查文件大小是否超出限制
        if (!$this->checkSize()) {
            $this->stateInfo = $this->getStateInfo("ERROR_SIZE_EXCEED");
            return;
        }

        //检查是否不允许的文件格式
        if (!$this->checkType()) {
            $this->stateInfo = $this->getStateInfo("ERROR_TYPE_NOT_ALLOWED");
            return;
        }

        $result = $this->ossPutObject($this->ossClient,$this->bucket,$this->fullName,$res);
        if($result){
            $this->stateInfo = $this->stateMap[0];
        }else{
            $this->stateInfo = $this->getStateInfo("ERROR_FILE_MOVE");
        }
    }
    private function upfileforwechatzht(){
        $options = \Yii::$app->params['options_zht'];
        $application = new Application($options);
        $temporary = $application->material_temporary;

        $res_head = $temporary->getHeader($this->media_id);

        $res = $temporary->getStream($this->media_id);
        if (!$res) {
            if(static::$upload_wechatimg_times < 3){//等待个6s使其往微信端上传成功
                static::$upload_wechatimg_times ++;
                sleep(2);//是以秒为单位的
                $this->upfileforwechatzht();
            }else{
                $this->stateInfo = $this->getStateInfo("ERROR_WECHATFILE_NOT_FOUND");
                return;
            }

        }
        $this->fileSize = $res_head['Content-Length'][0];
        $deposition = $res_head['Content-disposition'][0];
        $deposition_arr = explode('filename=',$deposition);
        if(!empty($deposition_arr) && isset($deposition_arr[1])){
            $filename_ori = str_replace('"','',$deposition_arr[1]);//获取文件名称
        }
        $this->oriName = $filename_ori;
        $this->fileType = $this->getFileExt();//扩展名
        $this->fullName = $this->getFullName();
        $this->filePath = $this->getFilePath();
        $this->fileName = $this->getFileName();

        //检查文件大小是否超出限制
        if (!$this->checkSize()) {
            $this->stateInfo = $this->getStateInfo("ERROR_SIZE_EXCEED");
            return;
        }

        //检查是否不允许的文件格式
        if (!$this->checkType()) {
            $this->stateInfo = $this->getStateInfo("ERROR_TYPE_NOT_ALLOWED");
            return;
        }

        $result = $this->ossPutObject($this->ossClient,$this->bucket,$this->fullName,$res->__toString());
        if($result){
            $this->stateInfo = $this->stateMap[0];
        }else{
            $this->stateInfo = $this->getStateInfo("ERROR_FILE_MOVE");
        }
    }

    /**
     * 简单的oss文件上传
     */
    private function ossPutObject($ossclient,$bucket,$object,$content,$options=null){
        try{
            if($options==null){
                $ossclient->putObject($bucket,$object,$content);
            }else{
                $ossclient->putObject($bucket,$object,$content,$options);//怎样返回上传文件的信息，需要回调函数吗；将文件信息返回给我们,
            }
            //返回给我们先存放到全局的一个数组中，然后后面当获取文件信息的时候就直接从数组中获取即可;现在先不考虑回调，写成仿照当前的获取用户信息的方式
        }catch(OssException $e){
           // \Yii::error("----------------start: oss putobject error----------");
            \Yii::error($e->getMessage());
           // \Yii::error("----------------end: oss putobject error----------");
            return false;
        }
        return true;
    }

    /**
     * oss大文件分片上传
     */
    private function ossMultipleUpload($ossclient, $bucket, $object, $file, $options=array()){
        try{
            $ossclient->multiuploadFile($bucket,$object,$file,$options);
        }catch(OssException $e){
            //\Yii::error("----------------start: oss multiple upload error----------");
            \Yii::error($e->getMessage());
            //\Yii::error("----------------end: oss multiple upload error----------");
            return false;
        }
        return true;
    }
    /**
     * 处理base64编码的图片上传
     * @return mixed
     */
    private function upBase64()
    {
        $base64Data = $_POST[$this->fileField];
        $img = base64_decode($base64Data);

        $this->oriName = $this->config['oriName'];
        $this->fileSize = strlen($img);
        $this->fileType = $this->getFileExt();
        $this->fullName = $this->getFullName();
        $this->filePath = $this->getFilePath();
        $this->fileName = $this->getFileName();
        $dirname = dirname($this->filePath);

        //检查文件大小是否超出限制
        if (!$this->checkSize()) {
            $this->stateInfo = $this->getStateInfo("ERROR_SIZE_EXCEED");
            return;
        }

        //创建目录失败
        if (!file_exists($dirname) && !mkdir($dirname, 0777, true)) {
            $this->stateInfo = $this->getStateInfo("ERROR_CREATE_DIR");
            return;
        } else if (!is_writeable($dirname)) {
            $this->stateInfo = $this->getStateInfo("ERROR_DIR_NOT_WRITEABLE");
            return;
        }

        //移动文件
        if (!(file_put_contents($this->filePath, $img) && file_exists($this->filePath))) { //移动失败
            $this->stateInfo = $this->getStateInfo("ERROR_WRITE_CONTENT");
        } else { //移动成功
            $this->stateInfo = $this->stateMap[0];
            $this->uploadSuccess($this->filePath);
        }

    }

    /**
     * 拉取远程图片
     * @return mixed
     */
    private function saveRemote()
    {
        $imgUrl = htmlspecialchars($this->fileField);
        $imgUrl = str_replace("&amp;", "&", $imgUrl);

        //http开头验证
        if (strpos($imgUrl, "http") !== 0) {
            $this->stateInfo = $this->getStateInfo("ERROR_HTTP_LINK");
            return;
        }
        //获取请求头并检测死链
        $heads = get_headers($imgUrl);
        if (!(stristr($heads[0], "200") && stristr($heads[0], "OK"))) {
            $this->stateInfo = $this->getStateInfo("ERROR_DEAD_LINK");
            return;
        }
        //格式验证(扩展名验证和Content-Type验证)
        $fileType = strtolower(strrchr($imgUrl, '.'));
        if (!in_array($fileType, $this->config['allowFiles']) || stristr($heads['Content-Type'], "image")) {
            $this->stateInfo = $this->getStateInfo("ERROR_HTTP_CONTENTTYPE");
            return;
        }

        //打开输出缓冲区并获取远程图片
        ob_start();
        $context = stream_context_create(
            array('http' => array(
                'follow_location' => false // don't follow redirects
            ))
        );
        readfile($imgUrl, false, $context);
        $img = ob_get_contents();
        ob_end_clean();
        preg_match("/[\/]([^\/]*)[\.]?[^\.\/]*$/", $imgUrl, $m);

        $this->oriName = $m ? $m[1]:"";
        $this->fileSize = strlen($img);
        $this->fileType = $this->getFileExt();//扩展名
        $this->fullName = $this->getFullName();//文件重命名生成符合配置中定义的路径和文件名
        $this->filePath = $this->getFilePath();//路径
        $this->fileName = $this->getFileName();
        $dirname = dirname($this->filePath);

        //检查文件大小是否超出限制
        if (!$this->checkSize()) {
            $this->stateInfo = $this->getStateInfo("ERROR_SIZE_EXCEED");
            return;
        }

        //创建目录失败
        if (!file_exists($dirname) && !mkdir($dirname, 0777, true)) {
            $this->stateInfo = $this->getStateInfo("ERROR_CREATE_DIR");//上传发生的错误
            return;
        } else if (!is_writeable($dirname)) {//is_writeable()判断文件是否可写
            $this->stateInfo = $this->getStateInfo("ERROR_DIR_NOT_WRITEABLE");
            return;
        }

        //移动文件
        if (!(file_put_contents($this->filePath, $img) && file_exists($this->filePath))) { //移动失败
            $this->stateInfo = $this->getStateInfo("ERROR_WRITE_CONTENT");
        } else { //移动成功
            $this->stateInfo = $this->stateMap[0];
            $this->uploadSuccess($this->filePath);
        }

    }

    /**
     * 上传错误检查
     * @param $errCode
     * @return string
     */
    private function getStateInfo($errCode)
    {
        return !$this->stateMap[$errCode] ? $this->stateMap["ERROR_UNKNOWN"] : $this->stateMap[$errCode];
    }

    /**
     * 获取文件扩展名
     * @return string
     */
    private function getFileExt()
    {
        return strtolower(strrchr($this->oriName, '.'));
    }
    /**
     * 获取分店后台id
     */
    private function getSiteId(){
        return Fun::getSiteId()?:0;
    }
    /**
     * 重命名文件
     * @return string
     */
    private function getFullName()
    {
        //替换日期事件
        $t = time();
        $d = explode('-', date("Y-y-m-d-H-i-s"));//以-作为分割点，将字符串分割为数组
        $format = $this->config["pathFormat"];//即/uploadfiles/web/site/file/{yyyy}{mm}{dd}/{time}{rand:6}"
        $format = str_replace("{yyyy}", $d[0], $format);//在$format中将{yyyy}替换为当前时间的年
        $format = str_replace("{yy}", $d[1], $format);
        $format = str_replace("{mm}", $d[2], $format);
        $format = str_replace("{dd}", $d[3], $format);
        $format = str_replace("{hh}", $d[4], $format);
        $format = str_replace("{ii}", $d[5], $format);
        $format = str_replace("{ss}", $d[6], $format);
        $format = str_replace("{time}", $t, $format);
        $format = str_replace("{site}", $this->getSiteId(), $format);
        //过滤文件名的非法字符,并替换文件名
        $oriName = substr($this->oriName, 0, strrpos($this->oriName, '.'));//查找'.'在oriName中最后一次出现的位置,提取oriName自开始至最后的‘.’
        $oriName = preg_replace("/[\|\?\"\<\>\/\*\\\\]+/", '', $oriName);//执行一个正则表达式的搜索和替换
        $format = str_replace("{filename}", $oriName, $format);

        //替换随机字符串
        $randNum = rand(1, 10000000000) . rand(1, 10000000000);
        if (preg_match("/\{rand\:([\d]*)\}/i", $format, $matches)) {
            $format = preg_replace("/\{rand\:[\d]*\}/i", substr($randNum, 0, $matches[1]), $format);
        }

        $ext = $this->getFileExt();
        return $format . $ext;
    }

    /**
     * 获取文件名
     * @return string
     */
    private function getFileName () {//substr返回字符串的一部分，该方法返回的是{time}{rand:6}，
        return substr($this->filePath, strrpos($this->filePath, '/') + 1);
    }

    /**
     * 获取文件完整路径
     * @return string
     */
    private function getFilePath()
    {
        $fullname = $this->fullName;
        $rootPath = \Yii::getAlias('@webroot'); //:workspace/web/frontend/web

        if (substr($fullname, 0, 1) != '/') {//substr返回$fullname的第一个字符
            $fullname = '/' . $fullname;///uploadfiles/web/site/file/{yyyy}{mm}{dd}/{time}{rand:6}"
        }

        return $rootPath . $fullname;
    }

    /**
     * 获取aliyun oss文件完整路径
     */
    private function getOssFilePath(){
        $fullname = $this->fullName;
        if(!empty($this->bucket)&&!empty($this->endpoint)){
            $ossRootPath =$this->bucket.'.'.$this->endpoint;
            return $ossRootPath . $fullname;
        }else{
            $this->stateInfo = $this->getStateInfo("ERROR_OSS_PATH");
            return;
        }
    }
    /**
     * 文件类型检测
     * @return bool
     */
    private function checkType()
    {
        return in_array($this->getFileExt(), $this->config["allowFiles"]);
    }

    /**
     * 文件大小检测
     * @return bool
     */
    private function  checkSize()
    {
        /*\Yii::error('filesize:'.$this->fileSize);
        \Yii::error('maxsize:'.$this->config["maxSize"]);*/
        return $this->fileSize <= ($this->config["maxSize"]);
    }

    /**
     * 获取当前上传成功文件的各项信息
     * @return array
     */
    public function getFileInfo()
    {
        $http_img_url = isset(\Yii::$app->params['http_img_url'])&&!empty(\Yii::$app->params['http_img_url'])?\Yii::$app->params['http_img_url']:\Yii::getAlias('@web');
        return [
            "state" => $this->stateInfo,
            "url" => $http_img_url.$this->fullName,
            "title" => $this->fileName,
            "original" => $this->oriName,
            "type" => $this->fileType,
            "size" => $this->fileSize
        ];
    }

    /**
     * 获取当前上传文件的各项信息
     * @param
     */
    public function getOssFileInfo(){
        if(!empty($this->bucket)&&!empty($this->endpoint)){
            $imgurl = 'http://'.$this->bucket.'.'.$this->endpoint.'/';
        }else{
            $imgurl = \Yii::getAlias('@web');
        }
        return [
            "state" => $this->stateInfo,
            //"url" => $imgurl.$this->fullName,
            "url" => $this->ossImageProcessUrl?'http://'.$this->ossImageProcessUrl.'/'.$this->fullName:'',
            "imgprocessurl"=>$this->ossImageProcessUrl?'http://'.$this->ossImageProcessUrl.'/'.$this->fullName:'',
            "title" => $this->fileName,
            "original" => $this->oriName,
            "type" => $this->fileType,
            "size" => $this->fileSize
        ];

    }

    public function uploadSuccess($filePath)
    {
        /**会上传到img.doumiaoduo.cn这个服务器上$this->trigger(self::UPLOAD_SUCCESS,new OssuploadSuccessEvent([
            'filePath'=>$filePath
        ]));*/
    }
}